class_docstr: A random shuffling buffer implementation. Items can be added to the buffer and retrieved in a random order.
code: def can_add(self):
      return (
          self._size < self._shuffling_queue_capacity
          and not self._done_adding
      )
  
imports: import abc
  from collections import deque
  import numpy
  import six
label_desc: Use image node_id 4 for calling the RandomShufflingBuffer obj's underlying member method code with example usage: obj.can_add() and returns: unknown